Oh! Oh, no, no, of course! [He waves his hands in dismissal of Yaku's apology.] Sorry, I - No, it's okay. Get going; I'll see you later, then.

And I'll take good care of her. [He beams again, in reference to Kaori. It's implied that he would since it's his job, but he wants to say it aloud for Yaku. It's more important that Yaku knows his precious girl will be in safe hands. Neither he or Kaori has anything to worry about.

Speaking of Kaori. Now Suga takes the opportunity to offer his hand for her to hold.] What do you say, Kaori-chan? I can show you where everything is and we can meet everybody else.

[And they all can really start their day.]